Spectrum of Coherent Electron Waves in the Solar Corona.
نویسندگان
چکیده
منابع مشابه
On a source of Alfvén waves heating the solar corona
Studies of the origin of coronal heating and acceleration of the solar wind invoke high-frequency Alfvén waves. Here we suggest a source for such waves associated with twisted magnetic loops emerging on the solar surface and reconnecting with the open field. We identify the loops with the ephemeral regions (small-scale bipoles) observed by ground-based instruments and by SOHO. To characterize t...
متن کاملOn Heating of Solar Corona and Acceleration of Low-Speed Solar Wind by Acoustic Waves Generated in Corona
We investigate possibilities of solar coronal heating by acoustic waves generated not at the photosphere but in the corona, aiming at heating in the midto low-latitude corona where the low-speed wind is expected to come from. Acoustic waves of period τ ∼ 100s are triggered by chromospheric reconnection, one model of small scale magnetic reconnection events recently proposed by Sturrock. These w...
متن کاملWIND observations of coherent electrostatic waves in the solar wind
The time domain sampler (TDS) experiment on WIND measures electric and magnetic wave forms with a sampling rate which reaches 120 000 points per second. We analyse here observations made in the solar wind near the Lagrange point L1. In the range of frequencies above the proton plasma frequency fpi and smaller than or of the order of the electron plasma frequency fpe, TDS observed three kinds of...
متن کاملPlasma Diagnostics of the Solar Corona Using Decimetric Radio Waves (review) 1. Solar and Stellar Coronae
The solar corona is a very dynamic plasma on time scales down to a few tens of microseconds. The various emissions at decimetric wavelength are brieey reviewed. Several of them seem to be caused by energetic (non-thermal) electrons accelerated in ares or are-like processes releasing free magnetic energy. The use of decimetric radiation as diagnostics of the acceleration process, the ambient pla...
متن کاملTurbulence in the Solar Corona
The solar corona has been revealed in the past decade to be a highly dynamic nonequilibrium plasma environment. Both the loop-filled coronal base and the extended acceleration region of the solar wind appear to be strongly turbulent, but direct observational evidence for a cascade of fluctuation energy from large to small scales is lacking. In this paper I will review the observations of waveli...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 1962
ISSN: 0004-6256
DOI: 10.1086/108844